The book provides thorough discussion on emerging topics related to 6G wireless communication systems such as programmable wireless environment (PWE); distributed and pervasive AI for wireless communications as well as terahertz (THz) communications. 6G Wireless: The Communication Paradigm Beyond 2030 provides comprehensive coverage of the vision, requirement, use-cases, enabling technologies, and challenges for the future 6G wireless communication systems. This will include key use cases such as Immersive and eXtended reality (IXR), advanced VR/AR, intelligent humanoid robotics/devices, fully autonomous transportation, intelligent and ubiquitous healthcare, neural communication through brain interface, remote surgery, holographic/3D video communications, high precision autonomous manufacturing and haptic/tactile communications. For those use cases, the book thoroughly analyses the challenges and requirements followed by providing in-depth coverage of potential enabling technologies like terahertz communications, pervasive and distributed AI battery- less/ultra-low-power devices, programmable wireless environment, metasurface for reconfigurability, cell-free or cell-less architecture, quantum communications, 3D beamforming, energy harvesting, and wireless power transfer, optical and visible light communications, blockchain, and so on. The book also presents the significant challenges facing the research community to meet the 6G requirements as well as potential research directions to address these challenges Written in tutorial style the primary audience of the book is postgraduate students and researchers in the broad domain of wireless communications as well as research-active academics. The book can also be useful as a reference book for BSc/MSc project/thesis works.